CN110752061A - Cable with conveniently determined breakpoint position and breakpoint determining system - Google Patents
Cable with conveniently determined breakpoint position and breakpoint determining system Download PDFInfo
- Publication number
- CN110752061A CN110752061A CN201911154717.0A CN201911154717A CN110752061A CN 110752061 A CN110752061 A CN 110752061A CN 201911154717 A CN201911154717 A CN 201911154717A CN 110752061 A CN110752061 A CN 110752061A
- Authority
- CN
- China
- Prior art keywords
- cable
- breakpoint
- signal
- conductor
- signal generating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/008—Power cables for overhead application
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/36—Insulated conductors or cables characterised by their form with distinguishing or length marks
- H01B7/365—Insulated conductors or cables characterised by their form with distinguishing or length marks being indicia imposed on the insulation or conductor
Abstract
The invention belongs to the field of cables, and particularly relates to a cable with conveniently determined breakpoint positions, which is provided with a first conductor, a second conductor and a cable sheath extruded outside the two conductors, wherein the cable sheath between the first conductor and the second conductor is recessed towards the middle; the invention solves the problems that the speed for determining the cable breakpoint is low and the testing of long-section long cables is inconvenient; the aerial overhead cable is inconvenient to measure; the invention has the advantages of simple structure, convenient use, quick breakpoint detection, capability of measuring long-section long cables, capability of testing in an overhead state of the cables and the like.
Description
Technical Field
The invention belongs to the field of cables, and particularly relates to a cable with a conveniently determined breakpoint position and a breakpoint determining system.
Background
In recent years, with the advance of national power grid construction, power grids in the midwestern regions, particularly mountainous regions, are more and more dense, and since cables are heavy in weight, when the cables are laid, the cables need to be transported to the mountains and laid manually, the labor cost is high, and when the cables are broken, the whole cable replacement cost is high, so that how to quickly determine breakpoints is the key for shortening the first-aid repair time.
In the prior art, the common methods used by electricians, such as the magnetic head line detection method, are as follows: the magnetic head wire of the recorder is lengthened, the broken wire is connected with 220V voltage, the magnetic head surface is attached to the cable to move, and the break point is formed at the place where the noise is suddenly lost; and then measuring by using a multimeter: one end of the cable with the breakpoint is connected to a live wire of 220V mains supply, and the other end of the cable is suspended. The digital multimeter is pulled to an AC2V gear, starting from a live wire access end of the cable, a pen point of the black meter pen is pinched by one hand, and the red meter pen is slowly moved along an insulating sheath of a lead by the other hand, and the voltage value displayed by the display screen is about 0.445V (measured by a DT890D type meter). When the red pen pointer is moved to a certain position, the voltage displayed by the display screen suddenly drops to 0.0 volt (about one tenth of the original voltage), and a cable breaking point is located at about 15cm forward (a live wire connecting end) from the position.
The two prior arts have the following disadvantages: 1. the breakpoint determination speed is low, the time spent is long, and the testing of long-section cables is inconvenient; 2. the aerial overhead cable is very inconvenient to measure by the two prior art methods.
Disclosure of Invention
In order to solve the above problems, the present invention discloses a cable and a breakpoint determination system with a conveniently determined breakpoint position, which is implemented by the following technical solutions.
A cable with a conveniently determined breakpoint position is provided with a first conductor, a second conductor and a cable sheath extruded outside the first conductor and the second conductor, wherein the cable sheath between the first conductor and the second conductor is recessed towards the middle.
The cable with the conveniently determined breakpoint position is characterized in that the first signal generating device is a radio frequency signal generating chip, and a shielding device is arranged around the chip, so that the radio frequency signal can be sent only in one direction.
The cable with the conveniently determined breakpoint position is characterized in that the output voltage range of the transformer rectifier is as follows: [1.8V-3.6V ].
The cable with the conveniently determined breakpoint position is characterized in that the distance between the first signal generating devices is 1 m.
The cable with the conveniently determined breakpoint position is characterized in that a meter mark is arranged outside a cable protection layer corresponding to each first signal generating device.
The cable with the conveniently determined breakpoint position is characterized in that the cable sheath is provided with a plurality of signal holes towards the middle concave part along the axial direction of the cable, the first signal generating device is a signal lamp, and the signal lamp is arranged in the signal holes.
Preferably, the cable with conveniently determined breakpoint position in the above embodiment is characterized in that the pitch of the signal holes is 1 m.
A breakpoint determining system is provided with an automatic detecting vehicle and a position receiving display, and is characterized in that the automatic detecting vehicle comprises a first travelling part, a second travelling part and a connecting part, the first travelling part comprises a first shaft, a first roller positioned on the first shaft and a first limiting part positioned below the first roller, the first roller can roll around the first shaft, the upper part of the first shaft is fixed with one end of the connecting part, the second travelling part comprises a second shaft, a second roller positioned on the second shaft and a second limiting part positioned below the second roller, the second roller can roll around the second shaft, the upper part of the second shaft is fixed with the other end of the connecting part, a driving device is further arranged on the end point of the connecting part positioned on one side of the first travelling part, the connecting part is arc-shaped and has elasticity, and can clamp the first travelling part and the second travelling part, rolling the first rolling wheel and the second rolling wheel in the recess of the cable, wherein the recess of the cable can be conveniently determined at the position of the breakpoint in the embodiment or the embodiment; the left side of one end of the connecting part corresponding to the second advancing part is provided with a signal receiving device, one end of the connecting part is also provided with a second signal transmitting device, and the position receiving display is used for receiving signals sent by the second signal transmitting device.
The breakpoint determining system is characterized in that the driving device is a part motor, and the driving device drives the first roller to rotate through a gear or a belt.
The breakpoint determination system is characterized in that the signal receiving device is a radio frequency signal receiving device.
The breakpoint determination system is characterized in that the signal receiving device is an optical signal receiving device, and when the cable is worn or blurred, the breakpoint position can be rapidly determined.
The breakpoint determination system is characterized in that the second signal transmitting device is a GPS positioning device.
The breakpoint determination system is characterized in that the signal receiving device receives a signal once, and the second signal transmitting device transmits a positioning signal once.
When the automatic patrol vehicle works, a cable with a conveniently determined breakpoint position is electrified (a first conductor is used as a live wire, a second conductor is used as a zero wire), so that a first signal generating device can emit signals, a connecting part of the automatic patrol vehicle is opened to the distance between a first advancing part and a second advancing part and the width of the cable with the conveniently determined breakpoint position, the first advancing part and the second advancing part respectively face the concave part of the cable with the conveniently determined breakpoint position, the connecting part is loosened, the first advancing part and the second advancing part clamp the cable with the conveniently determined breakpoint position due to the elasticity of the connecting part, a power supply is switched on, the automatic patrol vehicle moves along the cable, and when the automatic patrol vehicle advances to the corresponding first signal generating device, a signal receiving device on the automatic patrol vehicle can receive the signals sent by the first signal generating device, meanwhile, the second signal transmitting device immediately transmits a positioning signal to the position receiving display once and is recorded by the position receiving display; when a cable which can be conveniently determined at the breakpoint position is broken at a certain position, the first signal generating device behind the power-off position cannot send a signal, and the power-off position is located between the rice mark corresponding to the last first signal generating device recorded by the position receiving display and the next rice mark.
Therefore, the invention has the advantages of simple structure, convenient use, quick breakpoint detection, capability of measuring long-section long cables, capability of testing in an overhead state of the cables and the like.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 3 is a schematic structural diagram of embodiment 3 of the present invention.
Fig. 4 is a schematic perspective view of embodiment 3 of the present invention.
Fig. 5 is a schematic structural diagram of embodiment 4 of the present invention.
Fig. 6 is a schematic perspective view of embodiment 4 of the present invention.
Fig. 7 is a schematic structural diagram of a breakpoint determination system according to the present invention.
In the figure: 1. the cable comprises a cable body, a cable sheath, a signal hole, a first conductor, a cavity, a transformer rectifier, a first signal generating device, a lead, a second conductor, a meter mark, a first traveling part, a second traveling part, a driving device, a signal receiving device, a second signal generating device, a signal hole, a first conductor, a second conductor, a signal transmitting device, a signal receiving device and a connecting component, wherein the breakpoint is convenient to determine, the first shaft is 14, the transformer rectifier is 15, the first signal generating device is 16, the lead is 17, the second conductor is 18, the meter mark is 2, the.
Detailed Description
Example 1
Referring to fig. 1, a cable 1 with a conveniently determined breakpoint position includes a first conductor 11, a second conductor 17, and a cable sheath 11 extruded outside the first conductor 11 and the second conductor 17, where the cable sheath 11 between the first conductor 11 and the second conductor 17 is recessed toward the middle, and is characterized in that a cavity 13 is formed inside the cable sheath 11 between the first conductor 11 and the second conductor 17, upper and lower ends of the cavity 13 respectively extend to outer surfaces of the first conductor 11 and the second conductor 17, a transformer rectifier 14 and a first signal generator 15 are further disposed in the cavity 13, the transformer rectifier 14 is located above the first signal generator 15, and the first conductor 11, the second conductor 17, the transformer rectifier 14 and the first signal generator 15 are respectively connected by a wire 16.
Preferably, the cable 1 according to the above embodiment, wherein the first signal generating device 15 is a radio frequency signal generating chip of type F113, and a shielding device is provided around the chip, so that the radio frequency signal can be transmitted only in one direction, the chip can be purchased on the internet, and the website is: http:// product.dzsc.com/product/information/8919/201352623204756. html.
The cable 1 with the conveniently determined breakpoint position in the above embodiment is characterized in that the output voltage range of the transformer rectifier 14 is as follows: [1.8V-3.6V ].
The cable 1 with the conveniently determined breakpoint position in the above embodiment is characterized in that the distance between the first signal generating devices 15 is 1 m.
The cable 1 with the conveniently determined breakpoint position in the above embodiment is characterized in that a meter mark 18 is arranged outside the cable sheath 11 corresponding to each first signal generating device 15.
Example 2
Referring to fig. 2, a cable 1 with a conveniently determined breakpoint position, comprising a first conductor 11, a second conductor 17 and a cable sheath 11 extruded outside the first conductor 11 and the second conductor 17, wherein the cable sheath 11 between the first conductor 11 and the second conductor 17 is recessed towards the middle, characterized in that a cavity 13 is formed inside the cable sheath 11 between the first conductor 11 and the second conductor 17, the upper and lower ends of the cavity 13 extend to the outer surfaces of the first conductor 11 and the second conductor 17, a transformer rectifier 14 and a first signal generator 15 are arranged inside the cavity 13, the transformer rectifier 14 is located above the first signal generator 15, the first conductor 11, the second conductor 17, the transformer rectifier 14 and the first signal generator 15 are connected by wires 16, the cable sheath 11 is provided with a plurality of signal holes 111 towards the middle recessed part along the axial direction of the cable, the first signal generating device 15 is a diode, and the diode is disposed in the signal hole 111.
Preferably, the cable 1 with the conveniently determined breakpoint position in the above embodiment is characterized in that the spacing between the signal holes 111 is 1 m.
Example 3
Referring to fig. 3, 4 and 7, a breakpoint determination system having an automatic detection vehicle and a position receiving display is characterized in that the automatic detection vehicle is composed of a first traveling member 2, a second traveling member 3 and a connecting member 7, the first traveling member 2 is composed of a first shaft 21, a first roller 22 positioned on the first shaft 21, a first limiting member 23 positioned under the first roller 22, the first roller 22 can roll around the first shaft 21, one end of the connecting member 7 is fixed above the first shaft 21, the second traveling member 3 is composed of a second shaft 31, a second roller 32 positioned on the second shaft 31, a second limiting member 33 positioned under the second roller 32, the second roller 32 can roll around the second shaft 31, the other end of the connecting member 7 is fixed above the second shaft 31, a driving device 4 is further provided on an end point of the connecting member 7 positioned on one side of the first traveling member 2, the driving device 4 is a part motor, the driving device 4 drives the first roller 22 to rotate through a gear or a belt, the connecting part 7 is arc-shaped and has elasticity, so that the first travelling part 2 and the second travelling part 3 can be clamped tightly, and the first rolling wheel 22 and the second rolling wheel 32 can roll at the recess of the cable 1, the position of which can be conveniently determined, of the breakpoint in the embodiment 1 or the embodiment 2; the left side of one end of a connecting part 7 corresponding to the second advancing part 3 is provided with a signal receiving device 5, one end of the connecting part 7 is also provided with a second signal transmitting device 6, and the position receiving display is used for receiving signals sent by the second signal transmitting device 6.
A breakpoint determination system according to the above embodiment is characterized in that the signal receiving device 5 is a radio frequency signal receiving device corresponding to the first signal generating device 15 in embodiment 1.
A breakpoint determination system according to the above embodiment, wherein the second signal transmitting device 6 is a GPS positioning device.
A breakpoint determination system according to the above embodiment is characterized in that the signal receiving device 5 receives a signal once, and the second signal transmitting device 6 immediately transmits a positioning signal once.
The breakpoint determination system according to the above embodiment is characterized in that the driving device 4 is further connected to a power supply.
When the embodiment works, the cable 1 with the conveniently determined breakpoint position is electrified (the first conductor 11 is used as a live wire, the second conductor 17 is used as a zero wire), the first signal generating device 15 can emit signals, the connecting part 7 of the automatic detection vehicle is opened to the distance between the first advancing part 2 and the second advancing part 3 and the width of the cable 1 with the conveniently determined breakpoint position, the first advancing part 2 and the second advancing part 3 respectively face the concave part of the cable 1 with the conveniently determined breakpoint position, the connecting part 7 is loosened, because the connecting part 7 has elasticity, the first advancing part 2 and the second advancing part 3 clamp the cable 1 with the conveniently determined breakpoint position, the power supply is switched on, the automatic detection vehicle moves along the cable, when the automatic detection vehicle advances to the corresponding first signal generating device 15, the signal receiving device 5 on the automatic detection vehicle can receive the signals sent by the first signal generating device 15, meanwhile, the second signal transmitting device 6 immediately transmits a positioning signal to the position receiving display once and is recorded by the position receiving display; when the cable 1 which can be conveniently determined at the breakpoint position is broken at a certain position, the first signal generating device 15 behind the power-off position cannot send a signal, and the power-off position is located between the rice mark corresponding to the last first signal generating device 15 recorded by the position receiving display and the next rice mark.
Example 4
Referring to fig. 5, fig. 6 and fig. 7, a breakpoint determination system of the present embodiment has the same structure as that of embodiment 3, except that the signal receiving device 5 is an optical signal receiving device corresponding to the first signal generating device 15 in embodiment 2.
When the embodiment works, the cable 1 with the conveniently determined breakpoint position is electrified (the first conductor 11 is used as a live wire, the second conductor 17 is used as a zero wire), the first signal generating device 15 can emit an optical signal, the connecting part 7 of the automatic detection vehicle is opened to the distance between the first advancing part 2 and the second advancing part 3 and the width of the cable 1 with the conveniently determined breakpoint position, the first advancing part 2 and the second advancing part 3 respectively face the concave part of the cable 1 with the conveniently determined breakpoint position, the connecting part 7 is loosened, because the connecting part 7 has elasticity, the first advancing part 2 and the second advancing part 3 clamp the cable 1 with the conveniently determined breakpoint position, the power supply is switched on, the automatic detection vehicle moves along the cable, when the automatic detection vehicle advances to the corresponding first signal generating device 15, the signal receiving device 5 on the automatic detection vehicle can receive the optical signal emitted by the first signal generating device 15, meanwhile, the second signal transmitting device 6 immediately transmits a positioning signal to the position receiving display once and is recorded by the position receiving display; when the cable 1 which can be conveniently determined at the breakpoint position is broken at a certain position, the first signal generating device 15 behind the outage position cannot send a signal, the outage position is located at the position where the position receiving display records the position of the last first signal generating device 15, a worker can determine the approximate position through the position where the position receiving display records, then view the light signal near the approximate position, and the breakpoint position is located between two adjacent indicator lights which are turned on and turned off.
The cable of this embodiment, when the cable rice mark wearing and tearing or obscure, also can confirm the breakpoint position fast.
The middle part of the cable is recessed to form a track, so that when the breakpoint determining system moves forward again, the breakpoint determining system is fixed with the upper position and the lower position of the cable, signals of the breakpoint determining system are more stable to acquire, and the situation that the cable is not broken and does not acquire signals is avoided; meanwhile, the connecting part has elasticity and spans above the cable, so that two traveling wheels of the breakpoint determining system are prevented from being separated from the concave part of the cable, and the breakpoint determining system is prevented from falling off.
The invention solves the problems that the speed for determining the cable breakpoint is low and the testing of long-section long cables is inconvenient; the problem of inconvenient measurement of overhead cables.
The above-mentioned embodiments are merely preferred technical solutions of the present invention, and should not be construed as limiting the present invention. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (10)
1. A cable having a first conductor (11), a second conductor (17) and a sheath (11) extruded over the first conductor (11) and the second conductor (17) with a breakpoint location readily determinable, the sheath (11) between the first conductor (11) and the second conductor (17) is recessed towards the middle, the cable sheath is characterized in that a cavity (13) is formed inside the cable sheath (11) between the first conductor (11) and the second conductor (17), the upper end and the lower end of the cavity (13) respectively extend to the outer surfaces of the first conductor (11) and the second conductor (17), the cavity (13) is also internally provided with a transformer rectifier (14) and a first signal generating device (15), and the first conductor (11), the second conductor (17), the transformer rectifier (14) and the first signal generating device (15) are respectively connected by a lead (16).
2. A cable with a conveniently determined breakpoint position as claimed in claim 1, wherein said first signal generating means (15) is a radio frequency signal generating chip, and shielding means is provided around the chip, the radio frequency signal being transmitted in only one direction.
3. A cable with a conveniently determinable breakpoint position according to claim 1 or claim 2, characterized in that said transformer rectifier (14) has an output voltage range of: [1.8V-3.6V ].
4. A cable having a conveniently determinable breakpoint location as recited in claim 1 or claim 2, wherein said first signal generating means (15) is spaced apart by 1 m.
5. A cable with a conveniently determinable breakpoint position as claimed in claim 1 or claim 2, wherein each of said first signal generating devices (15) is provided with a meter mark (18) outside the corresponding cable sheath (11).
6. A cable having a conveniently defined breakpoint position as set forth in claim 1 or claim 2, wherein said sheath (11) is provided with a plurality of signal holes (111) toward the central recessed portion in the axial direction of the cable, said first signal generating means (15) is a signal lamp, the signal lamp is disposed in the signal holes (111), and said signal holes (111) are spaced 1m apart.
7. A breakpoint determination system is provided with an automatic detection vehicle and a position receiving display, and is characterized in that the automatic detection vehicle is composed of a first traveling part (2), a second traveling part (3) and a connecting part (7), the first traveling part (2) is composed of a first shaft (21), a first roller (22) positioned on the first shaft (21) and a first limiting part (23) positioned below the first roller (22), the first roller (22) can roll around the first shaft (21), the upper part of the first shaft (21) is fixed with one end of the connecting part (7), the second traveling part (3) is composed of a second shaft (31), a second roller (32) positioned on the second shaft (31) and a second limiting part (33) positioned below the second roller (32), the second roller (32) can roll around the second shaft (31), the upper part of the second shaft (31) is fixed with the other end of the connecting part (7), the end point of the connecting part (7) positioned on one side of the first travelling part (2) is also provided with a driving device (4), and the connecting part (7) is arc-shaped and has elasticity; and a signal receiving device (5) is arranged on the left side of one end of the connecting part (7) corresponding to the second advancing part (3), and a second signal transmitting device (6) is also arranged on one end of the connecting part (7).
8. A breakpoint determination system according to claim 7, wherein said signal receiving means (5) is a radio frequency signal receiving means.
9. A breakpoint determination system according to claim 7, wherein said signal receiving means (5) is an optical signal receiving means; the second signal transmitting device (6) is a GPS positioning device.
10. A method of determining a breakpoint, characterised by using a cable whose breakpoint location can be readily determined as claimed in any one of claims 1 to 6, and a breakpoint determination system as claimed in any one of claims 7 to 9; the method comprises the following steps: a cable whose breakpoint location can be readily determined is energized, namely: the first conductor is used as a live wire and a zero line of a second conductor, so that the first signal generating device can emit light signals, the connecting part of the automatic inspection vehicle is opened to the distance between the first advancing part and the second advancing part and the width of a cable with a breakpoint position which can be conveniently determined, the first advancing part and the second advancing part are respectively opposite to the concave part of the cable with the breakpoint position which can be conveniently determined, the connecting part is loosened, the first advancing part and the second advancing part clamp the cable with the breakpoint position which can be conveniently determined due to the elasticity of the connecting part, the power supply is switched on, the automatic inspection vehicle moves along the cable, when the automatic inspection vehicle advances to the corresponding first signal generating device, the signal receiving device on the automatic inspection vehicle can receive the light signals emitted by the first signal generating device, and simultaneously the second signal emitting device immediately emits a positioning signal to the position receiving display, and recorded by the position receiving display; when a cable which can be conveniently determined at the breakpoint position is broken at a certain position, the first signal generating device behind the power-off position cannot send a signal, the power-off position is located at the position where the position receiving display records the position of the last first signal generating device, a worker can determine the approximate position through the position where the position receiving display records, then view a light signal near the approximate position, and the breakpoint position is between two adjacent indicator lights which are turned on and turned off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911154717.0A CN110752061A (en) | 2019-11-22 | 2019-11-22 | Cable with conveniently determined breakpoint position and breakpoint determining system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911154717.0A CN110752061A (en) | 2019-11-22 | 2019-11-22 | Cable with conveniently determined breakpoint position and breakpoint determining system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110752061A true CN110752061A (en) | 2020-02-04 |
Family
ID=69284143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911154717.0A Pending CN110752061A (en) | 2019-11-22 | 2019-11-22 | Cable with conveniently determined breakpoint position and breakpoint determining system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110752061A (en) |
-
2019
- 2019-11-22 CN CN201911154717.0A patent/CN110752061A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103499768A (en) | Power cable real-time state monitoring and operation management system and measuring method of temperature of cable | |
| CN103616620B (en) | A kind of traction substation feeder cable partial discharge monitoring method | |
| CN102879706A (en) | Optical fiber bending loss principle-based wire strand breakage and damage detection method | |
| CN111572589B (en) | Urban rail transit fault distance measuring system and method | |
| US20080012573A1 (en) | Digital cable toning apparatus and method | |
| CN211265090U (en) | Cable with conveniently determined breakpoint position | |
| CN110752061A (en) | Cable with conveniently determined breakpoint position and breakpoint determining system | |
| CN105116285A (en) | Electric power tunnel cable operation monitoring system | |
| CN205665360U (en) | Filthy monitoring devices of insulator | |
| CN112067056A (en) | Contact net detection device, method and device and computer readable storage medium | |
| JP2839809B2 (en) | Optical fiber composite power cable | |
| CN109959847B (en) | Optical fiber passive pollution flashover monitoring system | |
| CN105044561A (en) | On-line monitoring system of all-fiber high voltage cable | |
| CN104880646A (en) | Cable fault detector | |
| JP2771625B2 (en) | Fault Detection Method for Optical Fiber Composite Overhead Ground Wire and Overhead Transmission Line | |
| JPS60207078A (en) | Detection of accident section of single-core power cable | |
| CN113715873A (en) | phi-OTDR dynamic nano-strain real-time positioning system of urban rail transit train | |
| JP3431762B2 (en) | Fault location system | |
| CN202614411U (en) | Distributed-type optical fiber temperature measurement system | |
| CN104567995A (en) | Temperature and strain distributed online monitoring device for electric power aerial optical cable | |
| JPH04236111A (en) | Device for monitoring accretion of snow on aerial power line | |
| CN215066360U (en) | Substation main equipment operation state acoustics removes inspection device | |
| CN211878202U (en) | Array sound wave digital signal communication acquisition control analog device | |
| CN209880217U (en) | Intelligent monitoring cable | |
| CN207610677U (en) | A kind of ice covering thickness detection device of overhead transmission line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |